A special thanks to Promaster for his help on this air bag problem on my 2003 Silverado. The GM bulletin #05-09-41-001B was correct in fixing my problem. The yellow 4-way connectors C221 and C222 located behind the driver's side kick plate was the problem. All I did was unplug and plug back in the 2 plugs (C221 & C222) that connect to each other 5 or 6 times. Then I took the Autel ML 629 code reader and erased the code (B0026). The air bag light and message have not came back on since. I forgot to mention I disconnected the negative battery terminal before working on the yellow plugs. Thanks again!